穆莱·伊斯梅尔大学Lahcen Kabiri课题组近日取得一项新成果。经过不懈努力，他们的论文发现了化学合成微生物群落在古浊积岩中形成褶皱结构。2025年12月3日出版的《地质学》发表了这项成果。

该研究组报道了摩洛哥塔古特组下托瓦陶统（下侏罗统）浊积岩中的褶皱构造。这些褶皱与较浅沉积物的褶皱一致；然而，考虑到它们的古深度（~200 m），它们不太可能是由光自养群落形成的。已知现代浊积岩具有化学合成群落，通常具有广泛的微生物席形成。课题组人员认为塔古特组褶皱是由化学合成群落形成的，浊积岩的沉积学、地球化学和水文条件排除了食草动物，允许褶皱构造岩化作用。褶皱结构出现在寒武纪、志留纪、泥盆纪和侏罗纪的浊积岩中，该团队假设生长在浊积沉积层上的化学合成垫代表了一种以前被忽视、不被重视或未被认识的保存模式。化学合成垫诱发皱纹范式具有重要意义；浊积岩中褶皱保存的地理窗口扩大了这些微生物引起的沉积结构形成和形成它们的群落的环境范围。浊积岩中的褶皱也为深时间化学合成生态系统的研究提供了新的可能性。

据了解，皱纹结构通常被解释为光合微生物席形成的。它们在显生宙海洋潮下环境中是罕见的，因为主题动物活动通常在石化之前破坏垫或生物膜。

附：英文原文

Title: Chemosynthetic microbial communities formed wrinkle structures in ancient turbidites

Author: Rowan C. Martindale, Sinjini Sinha, Travis N. Stone, Tanner Fonville, Stéphane Bodin, Franois-Nicolas Krencker, Peter Girguis, Crispin T.S. Little, Lahcen Kabiri

Issue&Volume: 2025-12-03

Abstract: Wrinkle structures are often interpreted to be formed by photosynthetic microbial mats. They are rare in Phanerozoic marine subtidal environments because animal activity typically destroys mats or biofilms before lithification. We report wrinkle structures in lower Toarcian (Lower Jurassic) turbidites from the Tagoudite Formation in Morocco. These wrinkles are consistent with those from shallower deposits; however, given their paleodepth (～200 m), it is unlikely they were formed by photoautotrophic communities. Modern turbidites are known to host chemosynthetic communities, often with extensive microbial mat formation. We propose the Tagoudite Formation wrinkles were formed by chemosynthetic communities, and the sedimentological, geochemical, and hydrographical conditions of the turbidites excluded grazers, allowing wrinkle structure lithification. Wrinkle structures occur in Cambrian, Silurian, Devonian, and Jurassic turbidites, and we posit that chemosynthetic mats growing on turbidity deposits represent a previously dismissed, underappreciated, or unrecognized mode of preservation. The chemosynthetic matinduced wrinkle paradigm has significant implications; this taphonomic window for wrinkle preservation in turbidites expands the range of environments where these microbially induced sedimentary structures form and the communities that made them. Wrinkles in turbidites also represent new possibilities for the study of chemosynthetic ecosystems in deep time.

DOI: 10.1130/G53617.1

Source: https://pubs.geoscienceworld.org/gsa/geology/article/doi/10.1130/G53617.1/721566/Chemosynthetic-microbial-communities-formed